Replace pistons and cylinders while i am in here?

Harleyelf · Posted: Thu Mar 05, 2015 12:43 am Post subject:

If there is no burnt oil on the piston sides, you might consider just honing the cylinders and changing the rings.

That said, AA is making much better piston and cylinder sets than just a few years ago. I put a set of 87 mm (1641cc) AA's in my bus last December and have had no issues in the sub-zero Wisconsin winter. Except, of course, for the ice crystals in my clutch cable tube that make me have to lift the clutch pedal with my foot after every shift on days when the temperature is below 10 degrees F. Have a new cable, clevis pin, wing nut, cartridge of silicone grease, and Bowden tube waiting for a warm day to install them.

Somebody on Ebay has AA 85.5 sets for $130 plus $15 shipping. New heads are only $175 each if you don't mind them being "made in China" and the set I bought look good although I haven't installed them yet. $395 for two including pushrod tubes, a gasket set and shipping from Dune Buggy Warehouse.

andk5591 · Posted: Thu Mar 05, 2015 6:16 am Post subject:

John at Aircooled doesnt seem to sell junk and you could probably ask him if they are AAs. I suspect they are. Price looks good. Filter pump - just make sure that you wont have clearance issues with your exhaust and get a decent quality one. Keep in mind that there are various size filters that you can use on them. I run a NAPA Gold 1342 (I think) which is fairly small.
_________________
D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

RPGreg2600 · Posted: Thu Mar 05, 2015 7:42 am Post subject:

rustfree1967bug · Posted: Thu Mar 05, 2015 12:47 pm Post subject:

Well since the engine is already out and the bus is not yet even road worthy it's not a big deal. Heads have already been rebuilt by brothers machine and they look great. I plan on getting a new stock bus exhaust setup. I thought i read that those filter style pumps have issues with clearing the exhaust? Anyone have experience with using one with stock exhaust. I think i will plan on buying the cylinder set from aircooled.net that i linked, a new oil pump either regular or filter style if it will work, and new rod bearings i suppose. I have new push rod tubes already.
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42

IDA's...well... they talk dirty -MURZI

rustfree1967bug · Posted: Thu Mar 05, 2015 6:52 pm Post subject:

I pulled a rod bearing and on the back it says 1.00 is that standard? Have never seen one that was marked with that before.
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42

IDA's...well... they talk dirty -MURZI

esde · Posted: Thu Mar 05, 2015 9:55 pm Post subject:

considering the time it would take to tear the block back down to replace the pistons and cylinders later, I would replace them now while the heads are off. For a stock build the AA are really nice, my experience is they're weight matched perfectly out of the box. Can't say the same for Mahle's lately, and they're $50 more..
The set of AA 87's I just bought were $145 delivered, at that price I won't gamble with borderline parts.

On your rod bearing, I think 1.00 would be a full mm over, or .040"
If so that crank is on it's last spin..

for comparison, I have a crank I'm assembling, it's on the first cut, .010"-.25mm, and the bearings are marked .25
standard bearings are usually marked std, or not at all.

andk5591 · Posted: Fri Mar 06, 2015 5:45 am Post subject:

personally, have not ever replaced the rod bearings unles the engine was being completely torn down. One more note on the AA's on the last set I installed, the ring gap was perfect except maybe one ring and it was close enough, but I took a hair off anyway. Filter pump - there are 2 styles and which one you use is dictated by the cam gear (dished or flat). You'll need to pull you stock pump to see which one you need.

Maybe try a search on here for clearance with a stock bus exhaust. Might be a non-issue and once again - you can use various sized filters.
_________________
D-Dubya Manx clone - 63 Short pan,1914.
Rosie 65 bug - My mostly stock daily driver.
Woodie 69 VW woodie (Hot VWs 7/12).
"John's car" 64 VW woodie - The first ever
Maxine 61 Cal-look bug - Cindy's daily driver.
Max - 73 standard Beetle hearse project - For sale
66 bug project - Real patina & Suby conversion
There's more, but not keeping them...

thomas. · Posted: Fri Mar 06, 2015 6:04 am Post subject:

. Keep in mind that there are various size filters that you can use on them. I run a NAPA Gold 1342 (I think) which is fairly small.[/quote]

I just bought one of these for a cb pump for a '66Westy 1600 Dual port. It was Napa Gold 1374.

rustfree1967bug · Posted: Fri Mar 06, 2015 9:11 am Post subject:

I just went ahead and placed an order with aircooled.net. Got those economy 85.5mm p&c set, rod bearings, CB maxi filter pump for flat 3 bolt cam and some new seals for the engine. Hopefully i should be good to go after this. If i can get another 20-30k out of this engine i will be happy since i will probably not be driving it more than 2500 miles per year. Thanks for all the help with this!
_________________
'70 ghia
'69 ghia
'65 singlecab
'66 sunroof beetle
'74 bus
'67 so-42

IDA's...well... they talk dirty -MURZI


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Replace pistons and cylinders while i am in here?
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